We, the U.S. Fish and Wildlife Service, announce the reopening of a 30-day public comment period for the proposed rule to designate critical habitat for the Topeka shiner (Notropis topeka) pursuant to the Endangered Species Act of 1973, as amended (Act). The proposed rule to designate critical habitat in the States of Iowa, Kansas, Minnesota, Nebraska, and South Dakota was published on August 21, 2002 (67 FR 54261). We herein propose critical habitat segments for Missouri and one additional segment for South Dakota, and discuss potential exclusions from critical habitat designation under the authority of section 4(b)(2). We also exclude habitat on the Fort Riley Military Installation in Kansas under authority of section 4(a)(3) of the Act. In addition, we announce the availability of the draft economic analysis and draft environmental assessment for the proposed designation, and announce a public meeting.